Wheel jump stroke measuring device and method

Abstract

The invention discloses a wheel jump stroke measuring device and method. The device comprises a laser displacement sensor fixed on a vehicle body; the light spot reflecting plate is connected with a wheel, when the wheel jumps up and down, the light spot reflecting plate is driven to move up and down, and the up-and-down jumping stroke of the wheel is equal to the up-and-down moving distance of the light spot reflecting plate; and the reflecting surface of the light spot reflecting plate is positioned in the measuring range of the laser displacement sensor. According to the scheme provided by the invention, the laser displacement sensor fixedly arranged on the vehicle body and the light spot reflecting plate connected with the wheel are used for measuring the wheel jump stroke, so that the measurement error caused by the change of the tensile force of the stay wire when the wheel quickly jumps up by the stay wire displacement sensor is avoided, and the measurement precision of the wheel jump stroke is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile testing technology, and in particular to a wheel jump travel measurement device and method. Background Art

[0002] Wheel jump travel refers to the distance from the bottom of the vehicle body to the tire completely off the ground under the action of the suspension system. This travel represents the free movement range of the suspension system in the vertical direction. Vehicle wheel jump travel is an important data in vehicle development, and it is necessary to measure the wheel jump travel continuously and in real time during vehicle testing. There are currently two mainstream measurement methods: one is to install a cable displacement sensor inside the suspension through a tooling to measure the displacement of a specific point on the suspension relative to the vehicle body; the other is to install a cable displacement sensor on the outside of the wheel through a tooling to measure the displacement of the wheel center relative to the vehicle body. Both methods are limited by the cable displacement sensor. When the wheel jumps up quickly, the tension of the cable will decrease sharply or even relax, resulting in measurement errors.

[0003] Therefore, how to provide a wheel jump stroke measuring device to improve the measurement accuracy of the wheel jump stroke has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides a wheel jump stroke measurement device and method, which are used to improve the measurement accuracy of the wheel jump stroke.

[0005] The present application provides a wheel jump travel measurement device, comprising:

[0006] A laser displacement sensor fixed to the vehicle body;

[0007] A light spot reflector connected to the wheel, wherein when the wheel bounces up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel bouncing up and down is equal to the distance of the light spot reflector moving up and down;

[0008] The reflection surface of the light spot reflection plate is located within the measurement range of the laser displacement sensor.

[0009] In one embodiment, the wheel jump travel measuring device further comprises:

[0010] A suction cup is adsorbed on the vehicle body and is used to fix the laser displacement sensor on the vehicle body.

[0011] In one embodiment, the wheel jump travel measuring device further comprises:

[0012] The base is connected to the suction cup and is used to be fixed to the vehicle body through the suction cup.

[0013] In one embodiment, the wheel jump travel measuring device further comprises:

[0014] The slide rail is fixed on the base.

[0015] In one embodiment, a sliding block is provided on the sliding rail, and the light spot reflection plate is connected to the sliding block.

[0016] In one embodiment, the wheel jump travel measuring device further comprises:

[0017] The rod end joint bearing pull rod, the sliding block is also connected to one end of the rod end joint bearing pull rod.

[0018] In one embodiment, the other end of the rod end joint bearing tie rod is connected to the wheel adapter plate.

[0019] In one embodiment, the wheel adapter plate is connected to the wheel hub via an extended hub nut.

[0020] In one embodiment, when the wheel bounces up and down, the wheel adapter plate drives the rod end joint bearing pull rod to move up and down, and the rod end joint bearing pull rod drives the slider to move up and down. The light spot reflection plate on the slider follows the up and down movement of the slider, so that the laser displacement sensor measures the displacement corresponding to the light spot reflection plate as the wheel jump stroke of the wheel.

[0021] The present application also provides a wheel jump stroke measurement method, which is applied to the wheel jump stroke measurement device provided in any of the above embodiments, comprising:

[0022] The distance between the laser displacement sensor and the light spot reflector is detected by a laser displacement sensor fixed to the vehicle body, wherein the light spot reflector is connected to the wheel, and when the wheel bounces up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel bouncing up and down is equal to the distance of the light spot reflector moving up and down;

[0023] When the distance change amplitude between the laser displacement sensor and the light spot reflection plate is greater than a preset amplitude, the distance change between the laser displacement sensor and the light spot reflection plate is displayed as a wheel jump stroke.

[0024] The beneficial effect of the present application is that: by using a laser displacement sensor fixed to the vehicle body and a light spot reflector connected to the wheel, when the wheel jumps up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel jumping up and down is equal to the distance of the light spot reflector moving up and down, and then the laser displacement sensor can detect the distance between the laser displacement sensor and the light spot reflector. The measurement error caused by the change of the tension force of the wire when the wheel jumps up quickly is avoided, thereby improving the measurement accuracy of the wheel jump stroke.

[0025] Other features and advantages of the present application will be described in the subsequent description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0026] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0028] Figure 1 This is a structural schematic diagram of a wheel jump stroke measurement device in one embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of the hardware structure of a wheel jump stroke measurement system in one embodiment of the present application;

[0030] Reference numerals:

[0031] 101—laser displacement sensor; 102—light spot reflection plate; 103—suction cup; 104—base; 105—slide rail; 106—slider; 107—rod end joint bearing tie rod; 108—wheel adapter plate; 109—wheel hub nut. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0033] In the prior art, the wheel jump stroke is measured by a cable displacement sensor. The cable displacement sensor consists of a stretchable stainless steel rope wrapped around a threaded hub, which is connected to a precision rotation sensor. In operation, the cable displacement sensor is installed in a fixed position and the cable is tied to the moving object. The linear motion of the cable is aligned with the axis of motion of the moving object. When the movement occurs, the cable stretches and contracts. An internal spring ensures that the tension of the cable remains unchanged. The threaded hub drives the precision rotation sensor to rotate and outputs an electrical signal proportional to the distance the cable moves. Measuring the output signal can derive the displacement, direction or speed of the moving object. Because the cable tension of the cable displacement sensor will decrease sharply or even relax when the wheel jumps up quickly, measurement errors will occur.

[0034] Figure 1 Schematic diagram of the structure of a wheel jump travel measurement device in one embodiment of the present application. Figure 1As shown, the device comprises:

[0035] A laser displacement sensor 101 fixed to the vehicle body;

[0036] A light spot reflection plate 102 connected to the wheel, wherein when the wheel bounces up and down, the light spot reflection plate is driven to move up and down, and the up and down jumping stroke of the wheel is equal to the up and down movement distance of the light spot reflection plate; the reflection surface of the light spot reflection plate is located within the measurement range of the laser displacement sensor.

[0037] In the present application, since the light spot reflector is connected to the wheel, for example, it can be connected to the center of the wheel, when the wheel bounces up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel bouncing up and down is equal to the distance of the light spot reflector moving up and down. In addition, the laser displacement sensor is fixed to the vehicle body, and the reflection surface of the light spot reflector is located within the measurement range of the laser displacement sensor, and then the distance from the light spot reflector can be monitored by the laser displacement sensor, thereby obtaining the wheel jump stroke of the vehicle.

[0038] It can be seen that the core of the design of this application is to cleverly connect the light spot reflector to the center of the wheel or an equivalent fixed point of the wheel center, ensuring that any slight vertical jump of the wheel can be directly and unbiasedly converted into the synchronous movement of the light spot reflector. This design principle ensures that the actual up and down jump of the wheel is completely consistent with the up and down movement of the light spot reflector, so as to ensure accurate measurement of the wheel jump stroke.

[0039] The laser displacement sensor is used as the core measuring element and is firmly installed on the non-moving part of the vehicle body to ensure the stability and reliability of the sensor itself during the measurement process. With its advanced laser technology, the laser displacement sensor can achieve non-contact and accurate measurement of the reflective surface of the light spot reflector, effectively avoiding the measurement errors caused by factors such as changes in the tension force and wear of the wire in the traditional wire measurement method. This non-contact measurement method not only improves the measurement accuracy, but also extends the service life of the measurement system and reduces maintenance costs.

[0040] More importantly, the high resolution and fast response characteristics of the laser displacement sensor enable the system to accurately capture and record every subtle change in wheel bounce in real time, providing strong data support for vehicle dynamic performance analysis, suspension system adjustment, and fault diagnosis. By accurately measuring the wheel bounce travel, engineers can have a deeper understanding of the vehicle's driving stability, comfort, and safety performance, and thus optimize and improve the vehicle design.

[0041] In summary, the wheel runout stroke measurement system based on laser displacement sensing technology proposed in this application significantly improves the measurement accuracy and reliability of wheel runout stroke through innovative connection design and non-contact measurement method, and contributes new solutions to technological progress and product upgrades in the field of automotive engineering.

[0042] In one embodiment, the wheel jump travel measuring device further comprises:

[0043] The suction cup 103 is adsorbed on the vehicle body and is used to fix the laser displacement sensor on the vehicle body.

[0044] In one embodiment, the wheel jump travel measuring device further comprises:

[0045] The base 104 is connected to the suction cup and is used to be fixed to the vehicle body through the suction cup.

[0046] In one embodiment, the wheel jump travel measuring device further comprises:

[0047] The slide rail 105 is fixed on the base.

[0048] In one embodiment, a slider 106 is disposed on the slide rail, and the light spot reflection plate is connected to the slider.

[0049] In one embodiment, the wheel jump travel measuring device further comprises:

[0050] The rod end joint bearing pull rod 107, the sliding block is also connected to one end of the rod end joint bearing pull rod.

[0051] In one embodiment, the other end of the rod end bearing tie rod is connected to the wheel adapter plate 108 .

[0052] In one embodiment, the wheel adapter plate is connected to the wheel hub via an extended hub nut 109 .

[0053] In one embodiment, the wheel jump travel measuring device is a specific device installed on the outer side of the wheel, which is composed of a laser displacement sensor 101, a light spot reflection plate 102, a base 104, a slide rail 105 and a slider 106, a rod end joint bearing tie rod 107 and a wheel side adapter plate 108. Among them, the base 104 is fixed to the vehicle body through a suction cup 103, the slide rail 105 and the laser displacement sensor 101 are fixed on the base 104, the slider 106 on the slide rail 105 is installed with a light spot reflection plate 102, and is connected to one end of the rod end joint bearing tie rod 107, and the other end of the rod end joint bearing tie rod 107 is connected to the wheel adapter plate 108, and the wheel adapter plate 108 is connected to the wheel hub through an extended hub nut 109.

[0054] Specifically, the laser displacement sensor 101, as the core component of the measurement system, adopts a non-contact measurement method, by emitting a laser beam and receiving the light signal reflected by the target, and calculating the distance change between the target and the sensor according to the principle of optical path difference. The sensor has high sensitivity, high resolution and good anti-interference ability, ensuring the accuracy and reliability of the measurement data.

[0055] The light spot reflection plate 102 is mounted on the slider 106 on the slide rail 105 and serves as the target reflection surface of the laser displacement sensor. Its design optimizes the light reflection efficiency, ensuring that the laser beam can be stably and clearly captured by the sensor, thereby accurately reflecting the slight changes in the wheel position.

[0056] The base 104 is the support foundation of the entire measuring device. It is firmly attached to the non-critical structural parts of the vehicle body through the strong suction cup 103 to ensure the stability and safety of the device during the measurement process. The suction cup design takes into account the needs of rapid installation and removal, which is convenient for flexible transfer between different vehicles.

[0057] The slide rail 105 is arranged along the radial direction of the wheel, providing a smooth and unobstructed sliding path for the slider 106. The slider 106 not only carries the light spot reflector 102, but is also connected to the wheel side adapter plate 108 through the rod end joint bearing pull rod 107, so as to achieve synchronous movement with the up and down movement of the wheel, ensuring the real-time and accuracy of the measurement data.

[0058] As a key component connecting the slider 106 and the wheel adapter plate 108, the rod end joint bearing pull rod 107 has flexible rotation and extension capabilities, which can adapt to various movement postures of the wheel under complex road conditions, while ensuring the stability and measurement accuracy of the measurement system.

[0059] The wheel adapter plate 108 is directly mounted on the wheel hub through the extended hub nut 109 to ensure the tight connection between the measuring device and the wheel. This design not only simplifies the installation process, but also improves the reliability of the measurement data and reduces the measurement error caused by loose connection.

[0060] When the wheel bounces up and down, the wheel adapter plate 108 drives the rod end joint bearing pull rod 107 to move up and down, and the rod end joint bearing pull rod 107 drives the slider 106 to move up and down, and the light spot reflection plate 102 follows the slider 106 to move up and down, so that the laser displacement sensor 101 can measure the displacement corresponding to the light spot reflection plate, that is, the wheel jump stroke. Specifically, the wheel adapter plate 108, as a component directly linked to the wheel, will move up and down accordingly with the up and down bounce of the wheel. This movement is effectively transmitted to the rod end joint bearing pull rod 107. As an important link in mechanical transmission, the rod end joint bearing pull rod 107 is responsible for converting the movement of the wheel adapter plate 108 into the up and down movement of the slider 106. Driven by the rod end joint bearing pull rod 107, the slider 106 slides up and down accurately. This sliding is not only smooth but also has good repeatability, ensuring the stability and accuracy of the measurement process. The light spot reflection plate 102 is connected to the slider 106, so it will follow the slider 106 to move up and down synchronously and at equal distances. Finally, the laser displacement sensor 101, as the core component of the measurement system, can accurately measure the displacement change of the light spot reflector 102 by emitting laser and receiving the light reflected by the light spot reflector 102. This displacement data directly reflects the wheel's runout stroke, thereby providing key wheel dynamic performance parameters.

[0061] The wheel jump travel measuring device provided in the present application can accurately, continuously and in real time measure the vehicle wheel jump travel through a laser displacement sensor fixedly mounted on the vehicle body and a light spot reflection plate connected to the wheel, and the measuring device can be additionally installed on the outside of the wheel through a suction cup and a base, so that the measuring device is not limited by the vehicle suspension type and space, is easy to install, and improves the test quality and measurement efficiency.

[0062] Furthermore, in a specific embodiment, the base 104 is fixed to the wheel arch of the vehicle body directly above the wheel by a magnetic suction cup 103; the slide rail 105 is vertically fixed to the base 104, and its length is about 200 mm; the laser displacement sensor 101 is fixed to the base 104 so that its light beam is downward and parallel to the slide rail 105; the slider 106 is installed on the slide rail 105, and the light spot reflection plate 102 is installed on it; the surface of the light spot reflection plate 102 is perpendicular to the light beam of the laser displacement sensor 101; one end of the rod end joint bearing pull rod 107 is connected to the slider 106, and the other end is connected to the wheel adapter plate 108; the wheel adapter plate 108 is connected to the wheel hub through the extended hub nut 109. Of course, the suction cup can also use a vacuum suction cup, etc. The fixed position of the device is not limited to the wheel arch of the vehicle body, but can also be other positions that make the slide rail perpendicular to the horizontal direction of the vehicle body, and of course it can also be other positions that are not perpendicular to the horizontal direction of the vehicle body. At this time, it is necessary to perform displacement conversion according to the relative position of the laser sensor and the light spot reflector. There are many implementation methods of the specific conversion method in the prior art, and this application will not expand on this.

[0063] Because the rod end joint bearing pull rod 107 connection is a bearing with a movable joint, it does not hinder various movements of the wheel, such as rotation, camber angle change and steering, etc. When the wheel jumps up and down, the laser displacement sensor 101 of the device can measure the wheel jump stroke.

[0064] The present application also provides a wheel jump stroke measurement method, which is applied to the wheel jump stroke measurement device provided in any of the above embodiments. The method can be implemented as the following steps A1-A2:

[0065] In step A1, the distance between the laser displacement sensor and the light spot reflector is detected by a laser displacement sensor fixed to the vehicle body, wherein the light spot reflector is connected to the wheel, and when the wheel bounces up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel bouncing up and down is equal to the distance of the light spot reflector moving up and down;

[0066] In step A2, when the distance change amplitude between the laser displacement sensor and the light spot reflection plate is greater than a preset amplitude, the distance change between the laser displacement sensor and the light spot reflection plate is displayed as a wheel jump stroke.

[0067] In one embodiment, the wheel jump travel measurement method further includes the following steps B1-B2 before detecting the distance between the laser displacement sensor and the light spot reflection plate by the laser displacement sensor fixed to the vehicle body:

[0068] In step B1, a trigger instruction from a user to perform a round-trip monitoring is received;

[0069] In step B2, the wheel jump stroke measuring device is started according to the trigger instruction.

[0070] In this embodiment, the wheel jump travel measurement device can receive remote control instructions so that when the vehicle travels to a specific area, the wheel jump travel measurement is started again, thereby reducing the wheel jump travel measurement on invalid road sections.

[0071] In one embodiment, the wheel jump stroke measurement method further includes:

[0072] In the process of detecting the distance between the laser displacement sensor and the light spot reflector plate by the laser displacement sensor fixed to the vehicle body, the displacement, angle and corresponding time of the wheel jump are recorded. The laser displacement sensor will measure the vertical displacement of the wheel and record the displacement of the wheel jump, including the compression stroke and the rebound stroke. Recording these displacement data can obtain detailed information about the wheel jump stroke. In addition to the displacement, the angle change of the wheel can be recorded by an additional angle sensor or a system combined with a laser displacement sensor. By recording the angle change of the wheel during the operation of the suspension system, it is helpful to understand the impact of the wheel posture on the performance of the suspension system. At the same time, during the measurement process, it is necessary to record the time of each stage in order to analyze the displacement and angle changes of the wheel at different time points. After the displacement, angle and time data are collected, they can be used to analyze the performance of the suspension system to determine whether there are abnormalities or areas that need adjustment, such as optimizing the suspension system design to improve the comfort and handling of the vehicle.

[0073] In this embodiment, by recording multiple indicators of wheel hop, the travel length, compression travel and rebound travel of the wheel hop, wheel ground clearance, suspension system status, vehicle load, wheel symmetry and other performance can be measured.

[0074] The present application can realize accurate, continuous and real-time measurement of wheel jump travel by adding a specific measuring device to the outer side of the wheel. The present invention can improve the measurement accuracy, is not limited by the vehicle suspension type and space, is easy to install, and improves the test quality and efficiency.

[0075] The beneficial effect of the present application is that by setting a laser displacement sensor fixed to the vehicle body and a light spot reflector connected to the wheel, when the wheel jumps up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel jumping up and down is equal to the distance of the light spot reflector moving up and down, and then the laser displacement sensor can detect the distance between the laser displacement sensor and the light spot reflector. This avoids the situation that when the wheel jumps up quickly, the tension of the wire displacement sensor will be sharply reduced or even relaxed, thereby generating measurement errors, thereby improving the measurement accuracy of the wheel jump stroke.

[0076] Figure 2 FIG. 1 is a schematic diagram of the hardware structure of a wheel jump travel measurement system in one embodiment of the present application. Figure 2 As shown, the wheel jump travel measurement system includes:

[0077] at least one processor 220; and,

[0078] A memory 204 in communication with the at least one processor 220; wherein,

[0079] The memory 204 stores instructions that can be executed by the at least one processor 220, and the instructions are executed by the at least one processor 220 to implement the wheel jump stroke measurement method described in any of the above embodiments.

[0080] Reference Figure 2 The wheel jump travel measurement system 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input / output (I / O) interface 212, a sensor component 214, and a communication component 216.

[0081] The processing component 202 generally controls the overall operation of the wheel jump travel measurement system 200. The processing component 202 may include one or more processors 220 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 202 may include one or more modules to facilitate the interaction between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate the interaction between the multimedia component 208 and the processing component 202.

[0082] The memory 204 is configured to store various types of data to support the operation of the wheel jump travel measurement system 200. Examples of such data include instructions for any application or method operating on the wheel jump travel measurement system 200, such as text, pictures, videos, etc. The memory 204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0083] The power supply assembly 206 provides power to various components of the wheel-jump travel measurement system 200. The power supply assembly 206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the wheel-jump travel measurement system 200.

[0084] The multimedia component 208 includes a screen that provides an output interface between the wheel jump stroke measurement system 200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 may also include a front camera and / or a rear camera. When the wheel jump stroke measurement system 200 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0085] The audio component 210 is configured to output and / or input audio signals. For example, the audio component 210 includes a microphone (MIC), and when the wheel jump travel measurement system 200 is in an operation mode, such as an alarm mode, a recording mode, a voice recognition mode, and a voice output mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 204 or sent via the communication component 216. In some embodiments, the audio component 210 also includes a speaker for outputting audio signals.

[0086] I / O interface 212 provides an interface between processing component 202 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0087] The sensor assembly 214 includes one or more sensors for providing various aspects of status assessment for the wheel jump stroke measurement system 200. For example, the sensor assembly 214 may include an acoustic sensor. In addition, the sensor assembly 214 may detect the open / closed state of the wheel jump stroke measurement system 200, the relative positioning of components, such as the display and keypad of the wheel jump stroke measurement system 200, and the sensor assembly 214 may also detect the operating state of the wheel jump stroke measurement system 200 or a component of the wheel jump stroke measurement system 200, the wheel jump stroke measurement system 200 orientation or acceleration / deceleration and the temperature change of the wheel jump stroke measurement system 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, etc.

[0088] The communication component 216 is configured to enable the wheel jump stroke measurement system 200 to provide the ability to communicate with other devices and cloud platforms in a wired or wireless manner. The wheel jump stroke measurement system 200 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0089] In an exemplary embodiment, the wheel jump stroke measurement system 200 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to execute the wheel jump stroke measurement method described in any of the above embodiments.

[0090] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0091] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0092] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0094] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A wheel jump travel measuring device, characterized in that: include: A laser displacement sensor fixed to the vehicle body; A light spot reflector connected to the wheel, wherein when the wheel bounces up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel bouncing up and down is equal to the distance of the light spot reflector moving up and down; The reflection surface of the light spot reflection plate is located within the measurement range of the laser displacement sensor.

2. The wheel jump travel measuring device according to claim 1, characterized in that: The wheel jump travel measuring device also includes: A suction cup is adsorbed on the vehicle body and is used to fix the laser displacement sensor on the vehicle body.

3. The wheel jump travel measuring device according to claim 2, characterized in that: The wheel jump travel measuring device also includes: The base is connected to the suction cup and is used to be fixed to the vehicle body through the suction cup.

4. The wheel jump travel measuring device according to claim 3, characterized in that: The wheel jump travel measuring device also includes: The slide rail is fixed on the base.

5. The wheel jump travel measuring device according to claim 4, characterized in that: A sliding block is arranged on the sliding rail, and the light spot reflecting plate is connected to the sliding block.

6. The wheel jump travel measuring device according to claim 4, characterized in that: The wheel jump travel measuring device also includes: The rod end joint bearing pull rod, the sliding block is also connected to one end of the rod end joint bearing pull rod.

7. The wheel jump travel measuring device according to claim 6, characterized in that: The other end of the rod end joint bearing pull rod is connected to the wheel adapter plate.

8. The wheel jump travel measuring device according to claim 7, characterized in that: The wheel adapter plate is connected to the wheel hub via an extended hub nut.

9. The wheel jump travel measuring device according to claim 8, characterized in that: When the wheel bounces up and down, the wheel adapter plate drives the rod end joint bearing pull rod to move up and down, and the rod end joint bearing pull rod drives the slider to move up and down. The light spot reflection plate on the slider follows the up and down movement of the slider, so that the laser displacement sensor measures the displacement corresponding to the light spot reflection plate as the wheel jump stroke of the wheel.

10. A wheel jump stroke measurement method, applied to the wheel jump stroke measurement device according to any one of claims 1 to 9, characterized in that: include: The distance between the laser displacement sensor and the light spot reflector is detected by a laser displacement sensor fixed to the vehicle body, wherein the light spot reflector is connected to the wheel, and when the wheel bounces up and down, the light spot reflector is driven to move up and down, and the stroke of the wheel bouncing up and down is equal to the distance of the light spot reflector moving up and down; When the distance change amplitude between the laser displacement sensor and the light spot reflection plate is greater than a preset amplitude, the distance change between the laser displacement sensor and the light spot reflection plate is displayed as a wheel jump stroke.

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